Cup Head Square Neck Bolts GB-T 14
Product: Cup Head Square Neck Bolts GB-T 14
Property Class:4.6,4.8,5.6,5.8,8.8,10.9,12.9,
A2-70, A4-70,A4-80
Finish:Zinc Plating（Yellow Zinc, Zinc Blue, Rinse Color), Black, Phosphate & Oil, Zinc Phosphate, Hot-dip Galvanized(HDG),Dacromet, Geomet
Material:Steel
Export country: USA, Japan, Australia, Europe and so on
Support customer customization
GB-T 14 is a national standard number, which is specially used to specify the relevant parameters and performance of large semicircular head square neck bolts. It belongs to semicircular head square neck bolts with a semicircular head and a square neck. The head of the semicircular head square neck bolt GB-T 14 is designed with a large semicircular head. This shape makes it have a better fixing effect and anti-theft effect, because there is no design of a groove or hexagon socket on the head that can be used as a power tool. There is a square neck under the head of the semicircular head square neck bolt GB-T 14, which makes the bolt not rotate with the nut due to the square neck, thereby increasing the stability of the connection. Due to its good fixing effect and anti-theft effect, the semicircular head square neck bolt GB-T 14 is widely used in various occasions requiring high-strength fastening, such as automobiles, textile machines, flour machines, lifeboats, etc. When selecting and using the semicircular head square neck bolt GB-T 14, the appropriate specifications and materials should be selected according to the specific application scenarios and needs to ensure the stability and safety of the connection.
Pictures
Product drawing
Product Specification
Size | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |
P | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
e min | 5.9 | 7.2 | 9.6 | 12.2 | 14.7 | 19.9 | 24.9 | |
dk | max | 13 | 16 | 20 | 24 | 30 | 38 | 46 |
min | 11.9 | 14.9 | 18.7 | 22.7 | 28.7 | 36.4 | 44.4 | |
ds | max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
min | 4.48 | 5.35 | 7.19 | 9.03 | 10.86 | 14.70 | 18.38 | |
k | max | 3.1 | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 |
min | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | |
k1 | min | 2.9 | 3.4 | 4.4 | 5.4 | 7.2 | 11.1 | 14.1 |
max | 4.1 | 4.6 | 5.6 | 6.6 | 8.8 | 12.9 | 15.9 | |
s | max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
r max | 0.4 | 0.5 | 0.8 | 0.8 | 1.2 | 1.2 | 1.6 | |
Support customer customization | ||||||||
Some introduction about our company
Application
Jinan Star Company specializes in the production of fastener products. Our bolts, nuts and other products are widely used in machinery, railways, automobiles, construction, electrical, bridges, communications, firefighting and other industries.
Certification
Jinan Star Fastener Co., Ltd. has obtained the 2015 version of ISO9001 quality management system certification through the scientific management of leaders of various departments and the pursuit of high quality for bolts and other fasteners. In addition, the laboratory owned by Star Company has obtained the certification in 2017. It passed the national CNAS certification in 2018, and the company passed the European CE certification in 2018.
Workshop
The workshop of Jinan Star Fastener Co., Ltd. is the core area of the company's production and manufacturing, with advanced production equipment. The reasonable layout of the workshop and the scientific production process ensure the efficient production and high-quality output of fastener products.
Testing Equipment
Jinan Star Fastener Company attaches great importance to product quality and is equipped with complete quality inspection equipment, such as tensile testing machines, torque testers,metallographic microscopes, optical projectors, salt spray test chambers, coating thickness gauges, etc., which are used to test the tensile strength and elongation of fastener products and evaluate the mechanical properties of products. These equipment ensure that every link from raw materials to finished products can be strictly controlled in quality.
Production equipment
In order to meet the needs of different customers, the company has introduced a series of advanced production equipment, such as multi-station cold heading machines, thread rolling equipment, heat treatment equipment, shot blasting machines, sand blasting machines, electroplating lines and other surface treatment equipment, and fully automatic packaging equipment. These equipment not only improve production efficiency, but also ensure the consistency and stability of product quality.
Packing
Service
1. Customize best fasteners: Customize offerings primarily based on the samples and drawings provided.
2. Cost-effectiveness: Wide choice of parts, provided by means of expert factories, and aggressive prices.
3. Professional manufacturer: All our fasteners are designed and manufactured in accordance to buyers' specs and performance.
4. Quality guaranteed: sturdiness trying out and key science layout to enhance the provider lifestyles of fasteners.
5. Perfect fastening options with 60 years of journey to clear up your problems: huge choice of parts.
FAQ
1. Please send catalog?
If you need a catalog, you can leave us your email and we will send the catalog within 2 working hours.
2. Can you accept using my own logo or design on the goods?
Yes, no problem.
3. How do you control the quality?
We need QC to inspect every manufacturing link of each batch of goods. We can provide you MTC and manufacturing unit certificate after product completion.
4. Can I visit your factory?
sure. We welcome you to visit our factory at any time. It is best to contact us before coming and let us know your schedule so we can pick you up from the airport or train station.
